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Shukla K, Khushboo, Mahto P, Singh VK. Enantioselective synthesis of tetrahydrofuran spirooxindoles via domino oxa-Michael/Michael addition reaction using a bifunctional squaramide catalyst. Org Biomol Chem 2022; 20:4155-4160. [PMID: 35521781 DOI: 10.1039/d2ob00633b] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
An enantioselective approach for the synthesis of tetrahydrofuran spirooxindoles via domino oxa-Michael/Michael addition reaction of γ-hydroxyenones to isatylidene malononitriles, using a cinchona derived bifunctional squaramide catalyst has been developed. The methodology is the first success of enantioselective oxa-Michael addition to isatylidene malononitriles. The spiro products were obtained in excellent yields with moderate to good enantio- and diastereoselectivities. Scale-up of the reaction and synthetic transformation of the spiro product into structurally complex molecules have been performed.
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Affiliation(s)
- Khyati Shukla
- Department of Chemistry, Indian Institute of Technology Kanpur, Kanpur-208 016, India.
| | - Khushboo
- Department of Chemistry, Indian Institute of Technology Kanpur, Kanpur-208 016, India.
| | - Pratibha Mahto
- Department of Chemistry, Indian Institute of Technology Kanpur, Kanpur-208 016, India.
| | - Vinod K Singh
- Department of Chemistry, Indian Institute of Technology Kanpur, Kanpur-208 016, India.
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Benaglia M, Greco SJ, Westphal R, Venturini Filho E, Medici F. Stereoselective Domino Reactions in the Synthesis of Spiro Compounds. SYNTHESIS-STUTTGART 2022. [DOI: 10.1055/a-1771-0641] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
AbstractThis review summarizes the latest developments in asymmetric domino reactions, with the emphasis on the preparation of spiro compounds. Discussions on the stereoselectivity of the transformations, the reaction mechanisms, the rationalization of the stereochemical outcome, and the applications of domino reactions to the synthesis of biologically active molecules and natural products are included when appropriate.1 Introduction2 Asymmetric Domino Reactions2.1 Domino Reactions Initiated by Michael Reactions2.2 Domino Reactions Initiated by Mannich Reactions2.3 Domino Reactions Initiated by Knoevenagel Reactions2.4 Domino Reactions Initiated by Cycloaddition Reactions2.5 Domino Reactions Initiated by Metal Insertion2.6 Other Mechanisms3 Conclusion
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Al-Majid AM, Alammari AS, Alshahrani S, Haukka M, Islam MS, Barakat A. Cu(ii)-thiophene-2,5-bis(amino-alcohol) mediated asymmetric Aldol reaction and Domino Knoevenagel Michael cyclization: a new highly efficient Lewis acid catalyst. RSC Adv 2022; 12:6149-6165. [PMID: 35424540 PMCID: PMC8982094 DOI: 10.1039/d2ra00674j] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2022] [Accepted: 02/09/2022] [Indexed: 11/24/2022] Open
Abstract
The highly efficient Lewis acid-catalytic system Cu(ii)-thiophene-2,5-bis(amino-alcohol) has been developed for enantioselective Aldol reaction of isatin derivatives with ketones. The new catalytic system also proved to be highly enantioselective for the one pot three-component Domino Knoevenagel Michael cyclization reaction of substituted isatin with malononitrile and ethylacetoacetate. The chiral ligand (2S,2′S)-2,2′-((thiophene-2,5-diylbis(methylene))bis(azanediyl))bis(3-phenylpropan-1-ol) (L1) in combination with Cu(OAc)2·H2O employed as a new Lewis acid catalyst, furnished 3-substituted-3-hydroxyindolin-2-ones derivatives (3a–s) in good to excellent yields (81–99%) with high enantioselectivities (up to 96% ee) and spiro[4H-pyran-3,3-oxindole] derivatives (6a–l) in excellent yields (89–99%) with high ee (up to 95%). These aldol products and spiro-oxindoles constitute a core structural motif in a large number of pharmaceutically active molecules and natural products. The highly efficient Lewis acid-catalytic system Cu(ii)-thiophene-2,5-bis(amino-alcohol) has been developed for enantioselective Aldol reaction of isatin derivatives with ketones.![]()
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Affiliation(s)
- Abdullah Mohammed Al-Majid
- Department of Chemistry, College of Science, King Saud University P. O. Box 2455 Riyadh 11451 Saudi Arabia +966-61-1467-5992
| | - Abdullah Saleh Alammari
- Department of Chemistry, College of Science, King Saud University P. O. Box 2455 Riyadh 11451 Saudi Arabia +966-61-1467-5992
| | - Saeed Alshahrani
- Department of Chemistry, College of Science, King Saud University P. O. Box 2455 Riyadh 11451 Saudi Arabia +966-61-1467-5992
| | - Matti Haukka
- Department of Chemistry, University of Jyväskylä P. O. Box 35 FI-40014 Jyväskylä Finland
| | - Mohammad Shahidul Islam
- Department of Chemistry, College of Science, King Saud University P. O. Box 2455 Riyadh 11451 Saudi Arabia +966-61-1467-5992
| | - Assem Barakat
- Department of Chemistry, College of Science, King Saud University P. O. Box 2455 Riyadh 11451 Saudi Arabia +966-61-1467-5992
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Nakano H, Ganesan D, Parasuraman P, Begum Z, Seki C, Okuyama Y, Kwon E, Uwai K, Tokiwa M, Tokiwa S, Takeshita M, Thiyagarajan R. New Sugar Based γ-Amino Silyl Ether Organocatalysts for Asymmetric Michael Addition of β-Keto Esters with Nitroolefins. HETEROCYCLES 2022. [DOI: 10.3987/com-21-s(r)2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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Freidooni J, Rad-Moghadam K, Saeedi-Mirakmahaleh M. ZrO 2 and Rice-Husk-Xanthate Adduct: An Efficient Bioderived Catalyst for Synthesis of Spiro[4 H-pyran-4,3′-indoline]s. Polycycl Aromat Compd 2021. [DOI: 10.1080/10406638.2021.1998145] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Affiliation(s)
- Jannat Freidooni
- Chemistry Department, Payam Noor University of Mashhad, Mashhad, Iran
| | - Kurosh Rad-Moghadam
- Chemistry Department, Faculty of sciences, University of Guilan, Rasht, Iran
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Abstract
This review summaries recent synthetic developments towards spirocyclic oxindoles and applications as valuable medicinal and synthetic targets.
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Affiliation(s)
- Alexander J. Boddy
- Department of Chemistry
- Imperial College London
- Molecular Sciences Research Hub
- London W12 0BZ
- UK
| | - James A. Bull
- Department of Chemistry
- Imperial College London
- Molecular Sciences Research Hub
- London W12 0BZ
- UK
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7
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Wang Y, Wei Z, Cao J, Liang D, Lin Y, Duan H. Synthesis of optically active 2-amino-1′-benzyl-2′,5-dioxo-5 H-spiro[indeno[1,2- b]pyran-4,3′-indoline]-3-carbonitriles catalyzed by a bifunctional squaramide derived from quinine. NEW J CHEM 2021. [DOI: 10.1039/d0nj06092e] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The first organocatalytic asymmetric reaction of propylene malononitrile with oxoindole and 1,3-indandione for the synthesis of chiral indeno-spiro compounds has been developed.
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Affiliation(s)
- Yuanyuan Wang
- Department of Chemistry
- Jilin University
- 130012 Changchun
- China
| | - Zhonglin Wei
- Department of Chemistry
- Jilin University
- 130012 Changchun
- China
| | - Jungang Cao
- Department of Chemistry
- Jilin University
- 130012 Changchun
- China
| | - Dapeng Liang
- Department of Chemistry
- Jilin University
- 130012 Changchun
- China
| | - Yingjie Lin
- Department of Chemistry
- Jilin University
- 130012 Changchun
- China
| | - Haifeng Duan
- Department of Chemistry
- Jilin University
- 130012 Changchun
- China
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Owolabi IA, Chennapuram M, Seki C, Okuyama Y, Kwon E, Uwai K, Tokiwa M, Takeshita M, Nakano H. Amino Amide Organocatalysts for Asymmetric Michael Addition of β-Keto Esters with β-Nitroolefins. BULLETIN OF THE CHEMICAL SOCIETY OF JAPAN 2019. [DOI: 10.1246/bcsj.20180302] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Affiliation(s)
- Isiaka Alade Owolabi
- Division of Sustainable and Environmental Engineering, Graduate School of Engineering, Muroran Institute of Technology, 27-1 Mizumoto, Muroran, Hokkaido 050-8585, Japan
| | - Madhu Chennapuram
- Division of Sustainable and Environmental Engineering, Graduate School of Engineering, Muroran Institute of Technology, 27-1 Mizumoto, Muroran, Hokkaido 050-8585, Japan
| | - Chigusa Seki
- Division of Sustainable and Environmental Engineering, Graduate School of Engineering, Muroran Institute of Technology, 27-1 Mizumoto, Muroran, Hokkaido 050-8585, Japan
| | - Yuko Okuyama
- Tohoku Medical and Pharmaceutical University, 4-4-1 Komatsushima, Aoba-ku, Sendai, Miyagi 981-8558, Japan
| | - Eunsang Kwon
- Research and Analytical Center for Giant Molecules, Graduate School of Sciences, Tohoku University, 6-3 Aoba, Aramaki, Aoba-ku, Sendai, Miyagi 980-8578, Japan
| | - Koji Uwai
- Division of Sustainable and Environmental Engineering, Graduate School of Engineering, Muroran Institute of Technology, 27-1 Mizumoto, Muroran, Hokkaido 050-8585, Japan
| | - Michio Tokiwa
- Tokiwakai Group, 62 Numajiri, Tsuduri-chou, Uchigo, Iwaki, Fukushima 973-8053, Japan
| | - Mitsuhiro Takeshita
- Tokiwakai Group, 62 Numajiri, Tsuduri-chou, Uchigo, Iwaki, Fukushima 973-8053, Japan
| | - Hiroto Nakano
- Division of Sustainable and Environmental Engineering, Graduate School of Engineering, Muroran Institute of Technology, 27-1 Mizumoto, Muroran, Hokkaido 050-8585, Japan
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Saini KM, Saunthwal RK, Kumar S, Verma AK. On Water: Metal-Free Synthesis of Highly Functionalized Benzothiazolylidene from ortho-Haloanilines. J Org Chem 2019; 84:2689-2698. [PMID: 30701974 DOI: 10.1021/acs.joc.8b03107] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
An environmentally benign, transition-metal-free organic base promoted one-pot cascade synthesis of highly functionalized benzo[ d]thiazol-2(3 H)-ylidene benzamide in the presence of water was accomplished by three-component reaction of ortho-iodoanilines, acrylates, and aroyl isothiocyanates. The protocol involves the in situ generation of thiourea intermediate followed by triethylamine induced intramolecular SNAr displacement reaction and subsequent Michael addition onto acrylate leads to the formation of benzo[ d]thiazol-2(3 H)-ylidene benzamide. Benzo[ b]thiazole is also generated in good yields using amidation and intramolecular aromatic nucleophilic substitution chemistry. The control experiments support the proposed mechanistic pathway. Further X-ray crystallographic studies confirmed the assigned structures of the fused benzamide.
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Affiliation(s)
- Kapil Mohan Saini
- Synthetic Organic Chemistry Research Laboratory, Department of Chemistry , University of Delhi , Delhi 110007 , India
| | - Rakesh K Saunthwal
- Synthetic Organic Chemistry Research Laboratory, Department of Chemistry , University of Delhi , Delhi 110007 , India
| | - Shiv Kumar
- Synthetic Organic Chemistry Research Laboratory, Department of Chemistry , University of Delhi , Delhi 110007 , India
| | - Akhilesh K Verma
- Synthetic Organic Chemistry Research Laboratory, Department of Chemistry , University of Delhi , Delhi 110007 , India
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Nakano H, Ganesan D, Chennapuram M, Begum Z, Seki C, Okuyama Y, Kwon E, Uwai K, Tokiwa M, Tokiwa S, Takeshita M. Sugar Based γ-Amino Alcohol Organocatalyst for Asymmetric Michael Addition of β-Keto Esters with Nitroolefins. HETEROCYCLES 2019. [DOI: 10.3987/com-19-14172] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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Konda S, Jakkampudi S, Arman HD, Zhao JCG. Enantioselective synthesis of spiro[ 4H-pyran-3,3'-oxindole] derivatives catalyzed by cinchona alkaloid thioureas: Significant water effects on the enantioselectivity. SYNTHETIC COMMUN 2019; 49:2971-2982. [PMID: 33012850 DOI: 10.1080/00397911.2019.1651866] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
Abstract
An efficient stereoselective three-component reaction for the synthesis of functionalized spiro[4H-pyran-3,3'-oxindole] derivatives was realized through an organocatalyzed domino Knoevenagel/Michael/cyclization reaction using a cinchonidine-derived thiourea as the catalyst. Using water as the additive was found to improve the product ee values significantly. Under the optimized conditions, the reactions between isatins, malononitrile, and 1,3-dicarbonyl compounds yield the desired spirooxindole products in good yields (71-92%) and moderate to high ee values (up to 87% ee).
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Affiliation(s)
- Swapna Konda
- Department of Chemistry, University of Texas at San Antonio, One UTSA Circle, San Antonio, TX 78249-0698, USA
| | - Satish Jakkampudi
- Department of Chemistry, University of Texas at San Antonio, One UTSA Circle, San Antonio, TX 78249-0698, USA
| | - Hadi D Arman
- Department of Chemistry, University of Texas at San Antonio, One UTSA Circle, San Antonio, TX 78249-0698, USA
| | - John C-G Zhao
- Department of Chemistry, University of Texas at San Antonio, One UTSA Circle, San Antonio, TX 78249-0698, USA
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